Thursday, October18, 2018 L-36.com


Marine Weather and Tides
Jacksonville Beach, FL

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:29AMSunset 6:52PM Thursday October 18, 2018 2:24 PM EDT (18:24 UTC) Moonrise 2:40PMMoonset 12:48AM Illumination 68% Phase: Waxing Gibbous; Moon at 9 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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AMZ452 Coastal Waters From Altamaha Sound To Fernandina Beach Fl Out 20 Nm- Coastal Waters From Fernandina Beach To St. Augustine Fl Out 20 Nm- Coastal Waters From St. Augustine To Flagler Beach Fl Out 20 Nm- 929 Am Edt Thu Oct 18 2018
.small craft advisory in effect through Friday morning...
Rest of today..Northeast winds 15 to 20 knots increasing to 20 knots into the afternoon. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 5 seconds. Inland waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tonight..East northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 6 seconds. Inland waters a moderate chop. A chance of showers.
Friday..East northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters a moderate chop. A chance of showers.
Friday night..East southeast winds 5 to 10 knots becoming west southwest after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Inland waters a light chop. A chance of showers.
Saturday..Southwest winds 5 to 10 knots. Seas 2 to 4 feet. Inland waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Saturday night..West northwest winds 15 to 20 knots becoming north northwest 20 to 25 knots after midnight. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters choppy. A chance of showers.
Sunday..North northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy.
Sunday night..East northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Inland waters choppy.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Inland waters a moderate chop. A slight chance of showers.
AMZ400 Synopsis For Altamaha Sound Ga To Flagler Beach Fl Out To 60 Nm- 929 Am Edt Thu Oct 18 2018
Synopsis.. Northeast winds will increase through the day as high pressure strengthens northeast of the region. A coastal trough will develop over the local waters tonight into Friday, continuing elevated onshore flow. A strong cold front will move across the region Saturday night trailed by an increase in northwest winds. Onshore winds quickly develop Sunday as strong high pressure builds over the carolinas.


7 Day Forecast for Marine Location Near Jacksonville Beach, FL
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location: 30.29, -81.36     debug


Area Discussion for - Jacksonville, FL
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Fxus62 kjax 181348
afdjax
area forecast discussion
national weather service jacksonville fl
948 am edt Thu oct 18 2018

Trending cooler with breezy onshore flow and mainly coastal
showers...

Update
A couple troughs were stretched over the local area this morning,
one from offshore of st. Johns flagler counties extending inland
over marion county... And the other stronger trough axis pressing
steadily ssw offshore of the golden isles, trailed by a wind shift
to the NE and increasing low level moisture.

Best chances of shower activity will focus over the coastal waters
and generally east of the interstate 95 corridor this morning
associatedwith low level convergence and high low level moisture
with the low level troughs. NE winds will increase north to south
through the day as the trough axis near our SE ga zones presses
southward across the area, and believe this feature will be the
trigger for scattered showers and even a few tstorms this
afternoon as it slides down the NE fl coast and interacts with
still elevated low level instability over inland zones. Continued
to advertise the best chances of convection this afternoon into
the evening near the st johns river basin and atlantic coast,
generally south of marineland. Although tstorm activity is
expected to be minimal given high mid level stability and dry air,
gusty winds will be possible given high dcape of near 1k j kg per
the 12z jax raob, with again the best chances of storms this
afternoon and early evening over NE fl.

Temperature relief is on the way today with cooler and drier
conditions expected over SE ga under partly to mostly cloudy skies
as high temperatures rise into the upper 70s (about 10 deg cooler
than yesterday). For NE fl, although dew pts and humidity will
remain elevated due to moist onshore flow and ocean water
temperatures still in the lower 80s, high temperatures will range
in the 80s verses the low mid 90s experienced during recent days.

Aviation
Periodic MVFR restrictions expected today as coastal clouds move
onshore under increasing nne flow this morning, transition to ne
into the afternoon. Gusts of 20-25 kts this afternoon for coastal
sites including ssi, crg and sgj. Highest chances of showers will
be at sgj through the day, with increasing chances of vcsh at jax,
crg, vqq and gnv into the afternoon. Probability of TS too low to
include in forecast at this time, but best potential will exist at
gnv and sgj into the afternoon.

Marine
Winds were increasing from NE at grays reef buoy 41008 last hour
at sustained 19g23kts with combined seas up to 4 ft trailing
secondary NE surge. Showers were starting to increase over the ga
coastal waters ahead of this second trough axis, with ongoing
showers just east of marineland trailing first frontal surge.

Through the day, expect winds will further increase and veer more
ene through midday with NE into the afternoon with advisory
conditions expected for all waters. No changes to current sca
headline.

Northeast winds will increase through the day as high pressure
strengthens northeast of the region. A coastal trough will develop
over the local waters tonight into Friday, continuing elevated
onshore flow.

Rip currents: high risk today and Friday due to elevated and
persistent onshore flow.

Preliminary point temps pops
Amg 80 62 82 65 0 10 10 10
ssi 78 69 80 68 10 30 40 20
jax 80 69 81 69 30 30 30 20
sgj 82 73 82 69 40 50 40 30
gnv 86 70 85 68 20 30 40 20
ocf 88 71 86 68 30 30 40 20

Jax watches warnings advisories
Fl... High rip current risk until 8 pm edt this evening for coastal
duval-coastal flagler-coastal nassau-coastal st. Johns.

Ga... High rip current risk until 8 pm edt this evening for coastal
camden-coastal glynn.

Am... Small craft advisory until 8 am edt Friday for coastal waters
from altamaha sound to fernandina beach fl out 20 nm-
coastal waters from fernandina beach to st. Augustine fl
out 20 nm-coastal waters from st. Augustine to flagler
beach fl out 20 nm-waters from altamaha sound ga to
fernandina beach fl from 20 to 60 nm-waters from fernandina
beach to st. Augustine fl from 20 to 60 nm-waters from st.

Augustine to flagler beach fl from 20 to 60 nm.

Enyedi


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LTJF1 8 mi37 min 81°F 74°F
MYPF1 - 8720218 - Mayport (Bar Pilots Dock), FL 8 mi37 min NE 18 G 22 80°F 83°F1023.5 hPa
BLIF1 11 mi37 min NE 18 G 21 81°F 1024.3 hPa81°F
DMSF1 12 mi37 min 82°F
FRDF1 - 8720030 - Fernandina Beach, FL 27 mi37 min NNE 11 G 19 81°F 82°F1024.5 hPa
41112 - Offshore Fernandina Beach, FL (132) 29 mi25 min 82°F5 ft
SAUF1 - St. Augustine, FL 30 mi25 min NE 11 G 12 81°F 83°F1022.5 hPa (-1.1)
RCYF1 35 mi37 min 83°F
GTXF1 - Guana Tolomato Matanzas Reserve, FL 44 mi100 min NE 4.1 84°F 1024 hPa77°F

Wind History for I-295 Bridge, St Johns River, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mayport Naval Station - Adm David L. McDonald Field, FL8 mi33 minNE 17 G 2410.00 miMostly Cloudy84°F73°F72%1022.8 hPa
Jacksonville Craig Municipal Airport, FL9 mi32 minNE 12 G 2110.00 miOvercast81°F73°F79%1022.9 hPa
Jacksonville Naval Air Station, FL17 mi32 minNNE 127.00 miLight Rain80°F78°F94%1022.6 hPa
Northeast Florida Regional Airport, FL22 mi29 minNE 1010.00 miMostly Cloudy85°F75°F75%1022.7 hPa
Jacksonville International Airport, FL22 mi29 minNE 12 G 2110.00 miMostly Cloudy81°F72°F74%1023.1 hPa
Fernandina Beach Municipal Airport, FL23 mi30 minNE 17 G 2310.00 miOvercast82°F72°F72%1023.4 hPa

Wind History from NRB (wind in knots)
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Last 24hrSE9SE10SE10SE11SE7SE6S7S6S4N3W3SW6W3W4N3N7N8N5N9N10NE11NE11NE17NE17
G24
1 day agoSE10SE11SE10SE10SE10SE10SE11SE10S8S9----------S6SW4SW5SW5SW7W4SW5E5--
2 days agoE9E10E10E8E7E8SE5SE6SE5SE5SE4SE6S7--SW3SW4CalmS4S6S8SW6CalmSE10SE9

Tide / Current Tables for Jacksonville Beach, Florida
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Jacksonville Beach
Click for Map
Thu -- 01:48 AM EDT     Moonset
Thu -- 03:28 AM EDT     4.02 feet High Tide
Thu -- 07:29 AM EDT     Sunrise
Thu -- 09:57 AM EDT     0.66 feet Low Tide
Thu -- 03:39 PM EDT     Moonrise
Thu -- 04:09 PM EDT     4.46 feet High Tide
Thu -- 06:51 PM EDT     Sunset
Thu -- 10:44 PM EDT     0.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.72.63.5443.62.92.11.40.90.711.72.53.54.24.54.33.832.11.30.70.5

Tide / Current Tables for St. Johns River Entrance, Florida Current
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St. Johns River Entrance
Click for Map
Thu -- 12:29 AM EDT     0.00 knots Slack
Thu -- 01:48 AM EDT     Moonset
Thu -- 02:41 AM EDT     1.37 knots Max Flood
Thu -- 06:06 AM EDT     -0.00 knots Slack
Thu -- 07:29 AM EDT     Sunrise
Thu -- 09:10 AM EDT     -1.51 knots Max Ebb
Thu -- 12:35 PM EDT     0.00 knots Slack
Thu -- 03:01 PM EDT     1.63 knots Max Flood
Thu -- 03:40 PM EDT     Moonrise
Thu -- 06:35 PM EDT     -0.00 knots Slack
Thu -- 06:51 PM EDT     Sunset
Thu -- 10:07 PM EDT     -1.67 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.50.51.21.31.10.80.1-0.8-1.4-1.5-1.5-1.2-0.60.41.31.61.41.10.5-0.4-1.2-1.6-1.7-1.6

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Jacksonville, FL (14,3,4,5)
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Ground Weather Radar Station Jacksonville, FL
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.